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Kotlin Programming: The Big Nerd Ranch Guide, First Edition
book

Kotlin Programming: The Big Nerd Ranch Guide, First Edition

by Josh Skeen, David Greenhalgh
July 2018
Intermediate to advanced content levelIntermediate to advanced
400 pages
12h 14m
English
Big Nerd Ranch Guides
Content preview from Kotlin Programming: The Big Nerd Ranch Guide, First Edition

Data Classes

Step one in building a world for your hero is to establish a coordinate system to move around on. The coordinate system will use cardinal directions to communicate direction as well as a class to represent change in direction, called Coordinate.

Coordinate is a simple type and a good candidate to be defined as a data class. As the name suggests, data classes are classes designed specifically for holding data, and they come with some powerful data manipulation benefits, as you will see shortly.

Create a new file called Navigation.kt and add Coordinate as a data class, using the data keyword. Coordinate should have three properties:

  • x, an Int val defined in the primary constructor for the x coordinate

  • y, an Int ...

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Publisher Resources

ISBN: 9780135165188